US10071581B1 - Web displacer method for a printing unit - Google Patents
Web displacer method for a printing unit Download PDFInfo
- Publication number
- US10071581B1 US10071581B1 US15/980,423 US201815980423A US10071581B1 US 10071581 B1 US10071581 B1 US 10071581B1 US 201815980423 A US201815980423 A US 201815980423A US 10071581 B1 US10071581 B1 US 10071581B1
- Authority
- US
- United States
- Prior art keywords
- web
- cylinder
- printing unit
- blanket cylinder
- blanket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007639 printing Methods 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims abstract description 39
- 238000004806 packaging method and process Methods 0.000 description 10
- 238000007645 offset printing Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- CNJLMVZFWLNOEP-UHFFFAOYSA-N 4,7,7-trimethylbicyclo[4.1.0]heptan-5-one Chemical compound O=C1C(C)CCC2C(C)(C)C12 CNJLMVZFWLNOEP-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000020347 spindle assembly Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/06—Lithographic printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/02—Conveying or guiding webs through presses or machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/44—Arrangements to accommodate interchangeable cylinders of different sizes to enable machine to print on areas of different sizes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/04—Tripping devices or stop-motions
- B41F33/08—Tripping devices or stop-motions for starting or stopping operation of cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2233/00—Arrangements for the operation of printing presses
- B41P2233/20—Safety devices preventing damage
- B41P2233/23—Safety devices preventing damage by preventing the web winding up around cylinders
Definitions
- a plurality of print cylinder saddles may be provided.
- Each print cylinder saddle has the same inner diameter for mounting on the print cylinders.
- the print cylinder saddles may have a variety of outer diameters.
- the printing unit may be a variable cut-off printing unit.
- the actuator may be secured to a movable blanket cylinder support of the printing unit.
- the web typically remains in contact with the blanket cylinder when the printing unit is in throw-off position.
- “throw off” refers to separating the blanket cylinder from the impression cylinder, and/or separating the plate cylinder from the blanket, and/or separating the plate cylinder from the inking and/or dampening unit.
- reasons for placing a printing unit in throw off position including for example: to change printing plate (plate change), to wash the printing blanket on the blanket cylinder (blanket washing), to change the blanket on the blanket cylinder (blanket change), or for other maintenance.
- the term “printing position” shall mean that the plate cylinder is in contact with the blanket cylinder and the blanket cylinder is in contact with the impression cylinder.
- FIGS. 2 ( a - c ) schematically show a printing unit in accordance with FIG. 1 which includes a web displacer 60 in accordance with the present invention in normal running (e.g. printing) position ( FIG. 2 a ), in an impression cylinder throw off position ( FIG. 2 b ), and in the impression cylinder throw off position with the web pulled against the impression cylinder ( FIG. 2 c ).
- FIG. 3 shows a perspective view of the web displacer 60 positioned within the printing unit 1 .
- Web displacer 60 may include a web displacement bar 61 in the form of a pull down bar which extends substantially across the length of the blanket cylinder 40 .
- the web displacement bar 61 is movable between a first position (e.g., illustrated in FIGS.
- the actuator includes a pair of pneumatic cylinders 62 , each having a piston rod 62 . 1 and cylinder 62 . 2 , wherein the piston rod 62 . 1 moves between an extended position ( FIGS. 2 a and 2 b ) and a retracted position ( FIG. 2 c ).
- the web displacement bar 61 is secured, at each end thereof, to one of the piston rods 62 . 1 .
- Each pneumatic cylinder 62 is mounted in position relative to the blanket and impression cylinders ( 40 , 50 ) via a mounting bracket 63 .
- other actuators may be used, such as motor driven screw spindles, carriages, hydraulic pistons, and the like.
- FIG. 2( c ) illustrates the printing unit in impression cylinder throw off position, with the web displacer 60 actuated so that the web displacement bar 61 holds the web 2 against the impression cylinder 50 and spaced away from the blanket cylinder 40 .
- the web displacer 60 is actuated via the pneumatic cylinder 62 .
- the pneumatic cylinder 62 moves from a first position in which the rod 62 . 1 is extended ( FIG. 2 b ) to a second position in which the rod 62 . 1 is retracted ( FIG. 2 c ).
- the pneumatic cylinder 62 itself is controlled by a controller in a conventional manner.
- the controller could, for example be a push-button or HMI (Human Machine Interface) on the work side of the printing unit or a controller elsewhere on the press or in the press-room.
- HMI Human Machine Interface
- the web displacement bar 61 enables the print cylinders to be rotated relative to the static web by pulling the web down against the smooth impression cylinder 50 . Even though the impression cylinder 50 rotates relative to the web 2 , the surface is smooth and non-tacky such that the web does not stretch or tear.
- FIG. 4 illustrates such an embodiment implemented in a variable cut-off printing unit of US 2014/0102325 to Caron, assigned to Goss International Americas, Inc., the entire disclosure of which is hereby incorporated by reference.
- the movable blanket cylinder support 41 includes pivotable support 16 , arm 28 , sliding element 32 , and actuator 24 . Sliding element 32 and actuator 24 together form a motorized screw spindle. As the arm 28 moves under control of the screw spindle, the position of the support 16 changes to accommodate different blanket cylinder sizes.
- the mounting bracket 63 is secured to the arm 28 of the blanket cylinder support via fasteners 63 . 1 such as bolts. Accordingly, the web displacement bar 61 remains at the correct height regardless of the cut-off or repeat size of the printing unit.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Presses (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/980,423 US10071581B1 (en) | 2016-05-10 | 2018-05-15 | Web displacer method for a printing unit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/150,638 US10000053B2 (en) | 2016-05-10 | 2016-05-10 | Web displacer for a printing unit |
US15/980,423 US10071581B1 (en) | 2016-05-10 | 2018-05-15 | Web displacer method for a printing unit |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/150,638 Division US10000053B2 (en) | 2016-05-10 | 2016-05-10 | Web displacer for a printing unit |
Publications (2)
Publication Number | Publication Date |
---|---|
US10071581B1 true US10071581B1 (en) | 2018-09-11 |
US20180257367A1 US20180257367A1 (en) | 2018-09-13 |
Family
ID=58692425
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/150,638 Active 2036-09-01 US10000053B2 (en) | 2016-05-10 | 2016-05-10 | Web displacer for a printing unit |
US15/980,423 Active US10071581B1 (en) | 2016-05-10 | 2018-05-15 | Web displacer method for a printing unit |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/150,638 Active 2036-09-01 US10000053B2 (en) | 2016-05-10 | 2016-05-10 | Web displacer for a printing unit |
Country Status (3)
Country | Link |
---|---|
US (2) | US10000053B2 (en) |
EP (1) | EP3243661B1 (en) |
ES (1) | ES2704630T3 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5813336A (en) | 1995-12-22 | 1998-09-29 | Heidelberger Druckmaschinen Ag | Printing unit with axially removable printing sleeves |
US20100126368A1 (en) | 2008-11-21 | 2010-05-27 | Goss International Americas, Inc. | Variable Cutoff Alignment Apparatus and Method of Aligning Printing Cylinders during a Cutoff Change |
US20140102325A1 (en) | 2012-10-17 | 2014-04-17 | Goss International Americas, Inc. | Variable cutoff printing press with off impression gap |
US8850975B2 (en) | 2010-07-15 | 2014-10-07 | Goss International Americas, Inc. | Impression mechanism for a variable cutoff printing unit |
-
2016
- 2016-05-10 US US15/150,638 patent/US10000053B2/en active Active
-
2017
- 2017-05-09 EP EP17170036.2A patent/EP3243661B1/en active Active
- 2017-05-09 ES ES17170036T patent/ES2704630T3/en active Active
-
2018
- 2018-05-15 US US15/980,423 patent/US10071581B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5813336A (en) | 1995-12-22 | 1998-09-29 | Heidelberger Druckmaschinen Ag | Printing unit with axially removable printing sleeves |
US20100126368A1 (en) | 2008-11-21 | 2010-05-27 | Goss International Americas, Inc. | Variable Cutoff Alignment Apparatus and Method of Aligning Printing Cylinders during a Cutoff Change |
US8850975B2 (en) | 2010-07-15 | 2014-10-07 | Goss International Americas, Inc. | Impression mechanism for a variable cutoff printing unit |
US20140102325A1 (en) | 2012-10-17 | 2014-04-17 | Goss International Americas, Inc. | Variable cutoff printing press with off impression gap |
Also Published As
Publication number | Publication date |
---|---|
US10000053B2 (en) | 2018-06-19 |
EP3243661B1 (en) | 2018-11-28 |
US20180257367A1 (en) | 2018-09-13 |
ES2704630T3 (en) | 2019-03-19 |
EP3243661A1 (en) | 2017-11-15 |
US20170326872A1 (en) | 2017-11-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FEPP | Fee payment procedure |
Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
AS | Assignment |
Owner name: GOSS INTERNATIONAL AMERICAS, INC., NEW HAMPSHIRE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GENTLE, BRIAN JOSEPH;CARON, GLEN ROGER;SIGNING DATES FROM 20160517 TO 20160526;REEL/FRAME:046493/0559 |
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STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: GOSS INTERNATIONAL AMERICAS, LLC, NEW HAMPSHIRE Free format text: CONVERSION;ASSIGNOR:GOSS INTERNATIONAL AMERICA, INC.;REEL/FRAME:053828/0468 Effective date: 20151006 Owner name: MANROLAND GOSS WEB SYSTEMS AMERICAS LLC, NEW HAMPSHIRE Free format text: CHANGE OF NAME;ASSIGNOR:GOSS INTERNATIONAL AMERICAS, LLC;REEL/FRAME:053837/0183 Effective date: 20180921 |
|
AS | Assignment |
Owner name: MANROLAND GOSS WEB SYSTEMS GMBH, GERMANY Free format text: SECURITY INTEREST;ASSIGNOR:MANROLAND GOSS WEB SYSTEMS AMERICAS LLC;REEL/FRAME:054296/0874 Effective date: 20201007 |
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AS | Assignment |
Owner name: MANROLAND GOSS WEB SYSTEMS GMBH, GERMANY Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE SUPPORTING SECURITY INTEREST DOCUMENT PREVIOUSLY RECORDED AT REEL: 054296 FRAME: 0874. ASSIGNOR(S) HEREBY CONFIRMS THE SUPPORTING SECURITY INTEREST DOCUMENT;ASSIGNOR:MANROLAND GOSS WEB SYSTEMS AMERICAS LLC;REEL/FRAME:055617/0520 Effective date: 20201007 |
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Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |